I am working with ArcMap 10.3. I have imported DEM files. When I imported the files they had the extension of .DDF.

I would now like to be able to take a list of XY coordinates and, for lack of a better term, merge them with the DEM files so that I can get the elevation of any given point.

I imported XY Data and projected it with the NAD 1983 coordinate system. But, I can't figure out how to "combine" the 2 layers to get the elevation of my XY points. I can right click on the map and click "Identify..." and get the elevation, but that's about it.

Also, if there is a way to do this without the Spatial Analyst extension, that would be great. I am supposed to have it on my license, but for whatever reason I don't and need to know if there is a way to do this without it.